

from __future__ import annotations

from collections.abc import Iterator
from typing import Any



class        A__:
						"""simple docstring"""






						def __init__(    self  ,      _lowercase    )     -> Optional[Any]:
									a_						:						Any 							= data
									a_						:						Node | None 							= None







class        A__:
						"""simple docstring"""






						def __init__(    self    )     -> Dict:
									a_						:						str 							= None
									a_						:						List[str] 							= None





						def __iter__(    self    )     -> Iterator[Any]:
									a_						:						Any 							= self.head
									while self.head:
												yield node.data
												a_						:						Dict 							= node.next
												if node == self.head:
															break





						def __len__(    self    )     -> int:
									return sum(1 for _ in self    )





						def __repr__(    self    )     -> Optional[Any]:
									return "->".join(str(_lowercase    ) for item in iter(self    )    )





						def 			UpperCamelCase__					(    self  ,      _lowercase    )     -> None:
									self.insert_nth(len(self    )  ,      _lowercase    )





						def 			UpperCamelCase__					(    self  ,      _lowercase    )     -> None:
									self.insert_nth(0  ,      _lowercase    )





						def 			UpperCamelCase__					(    self  ,      _lowercase  ,      _lowercase    )     -> None:
									if index < 0 or index > len(self    ):
												raise IndexError("""list index out of range."""    )
									a_						:						Optional[int] 							= Node(_lowercase    )
									if self.head is None:
												a_						:						List[Any] 							= new_node  # first node points itself
												a_						:						str 							= new_node
									elif index == 0:  # insert at head
												a_						:						List[str] 							= self.head
												a_						:						Tuple 							= new_node
									else:
												a_						:						Tuple 							= self.head
												for _ in range(index - 1    ):
															a_						:						Any 							= temp.next
												a_						:						List[Any] 							= temp.next
												a_						:						Union[str, Any] 							= new_node
												if index == len(self    ) - 1:  # insert at tail
															a_						:						str 							= new_node





						def 			UpperCamelCase__					(    self    )     -> int:
									return self.delete_nth(0    )





						def 			UpperCamelCase__					(    self    )     -> Any:
									return self.delete_nth(len(self    ) - 1    )





						def 			UpperCamelCase__					(    self  ,      _lowercase = 0    )     -> Any:
									if not 0 <= index < len(self    ):
												raise IndexError("""list index out of range."""    )
									a_						:						str 							= self.head
									if self.head == self.tail:  # just one node
												a_						:						Union[str, Any] 							= None
									elif index == 0:  # delete head node
												a_						:						List[Any] 							= self.tail.next.next
												a_						:						Optional[int] 							= self.head.next
									else:
												a_						:						Any 							= self.head
												for _ in range(index - 1    ):
															a_						:						Tuple 							= temp.next
												a_						:						Optional[int] 							= temp.next
												a_						:						Any 							= temp.next.next
												if index == len(self    ) - 1:  # delete at tail
															a_						:						Optional[int] 							= temp
									return delete_node.data





						def 			UpperCamelCase__					(    self    )     -> bool:
									return len(self    ) == 0







def 					_UpperCAmelCase				(						):

			'''simple docstring'''



			a_						:						Any 							= CircularLinkedList()
			assert len(a__) == 0
			assert circular_linked_list.is_empty() is True
			assert str(a__) == ""

			try:
						circular_linked_list.delete_front()
						raise AssertionError  # This should not happen
			except IndexError:
						assert True  # This should happen

			try:
						circular_linked_list.delete_tail()
						raise AssertionError  # This should not happen
			except IndexError:
						assert True  # This should happen

			try:
						circular_linked_list.delete_nth(-1)
						raise AssertionError
			except IndexError:
						assert True

			try:
						circular_linked_list.delete_nth(0)
						raise AssertionError
			except IndexError:
						assert True

			assert circular_linked_list.is_empty() is True
			for i in range(5):
						assert len(a__) == i
						circular_linked_list.insert_nth(a__  ,	i + 1)
			assert str(a__) == "->".join(str(a__) for i in range(1  ,	6))

			circular_linked_list.insert_tail(6)
			assert str(a__) == "->".join(str(a__) for i in range(1  ,	7))
			circular_linked_list.insert_head(0)
			assert str(a__) == "->".join(str(a__) for i in range(0  ,	7))

			assert circular_linked_list.delete_front() == 0
			assert circular_linked_list.delete_tail() == 6
			assert str(a__) == "->".join(str(a__) for i in range(1  ,	6))
			assert circular_linked_list.delete_nth(2) == 3

			circular_linked_list.insert_nth(2  ,	3)
			assert str(a__) == "->".join(str(a__) for i in range(1  ,	6))

			assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
	import doctest

	doctest.testmod()





__snake_case				:      int   		=			[
    """Audio""",
    """Array2D""",
    """Array3D""",
    """Array4D""",
    """Array5D""",
    """ClassLabel""",
    """Features""",
    """Sequence""",
    """Value""",
    """Image""",
    """Translation""",
    """TranslationVariableLanguages""",
]
from .audio import Audio
from .features import ArrayaD, ArrayaD, ArrayaD, ArrayaD, ClassLabel, Features, Sequence, Value
from .image import Image
from .translation import Translation, TranslationVariableLanguages


